package cn.tedu._05weibo.controller;

import cn.tedu._05weibo.common.response.JsonResult;
import cn.tedu._05weibo.common.response.StatusCode;
import cn.tedu._05weibo.mapper.UserMapper;
import cn.tedu._05weibo.pojo.dto.UserLoginDTO;
import cn.tedu._05weibo.pojo.dto.UserRegDTO;
import cn.tedu._05weibo.pojo.entity.User;
import cn.tedu._05weibo.pojo.vo.UserVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import springfox.documentation.annotations.ApiIgnore;
import springfox.documentation.spring.web.json.Json;

import javax.servlet.http.HttpSession;
import java.util.Date;

import static javax.swing.text.html.CSS.getAttribute;

@Api(tags = "01.用户模块")
@Slf4j
@RestController
@RequestMapping("/v1/users/")
public class UserController {

    @Autowired
    private UserMapper userMapper;
    /**
     * 1.注册功能
     */
    @ApiOperation("注册功能")
    @PostMapping("reg")
    public JsonResult reg(@RequestBody @Validated UserRegDTO userRegDTO){
        //以日志的形式打印输出
        log.debug("userRegDTO = " + userRegDTO);
        /*
            1.接收参数[已完成];
            2.数据合法性校验[暂时不做,后续用验证框架做];
            3.校验用户名是否被占用[SELECT接口];
              3.1 被占用,return 2;
              3.2 未被占用,[INSERT接口],return 1;
         */
        //校验用户名是否被占用
        UserVO userVO = userMapper.selectByUsername(userRegDTO.getUsername());
        if (userVO != null){//被占用
            //统一响应结果返回[全参构造]
            return new JsonResult(StatusCode.USERNAME_ALREADY_EXISTS);
        }
        //未被占用
        User user = new User();
        BeanUtils.copyProperties(userRegDTO, user);
        user.setCreated(new Date());
        userMapper.insert(user);

        return JsonResult.ok();
    }
    /**
     *2.登录
     */
    @ApiOperation("登录功能")
    @PostMapping("login")
    public JsonResult login(@RequestBody UserLoginDTO userLoginDTO, @ApiIgnore HttpSession session) {
        UserVO userVO = userMapper.selectByUsername(userLoginDTO.getUsername());
        if(userVO == null){
            return new JsonResult(StatusCode.USERNAME_ERROR);
        }
        if(userVO.getPassword().equals(userLoginDTO.getPassword())){
            session.setAttribute("user", userVO);
            return JsonResult.ok();
        }
        return new JsonResult(StatusCode.PASSWORD_ERROR);
    }

    /**
     * 3.获取当前页用户功能
     */
    @ApiOperation("获取当前用户")
    @GetMapping("currentUser")
    public JsonResult currtenUser(@ApiIgnore HttpSession session){
          UserVO userVO = (UserVO) session.getAttribute("user");
          return JsonResult.ok(userVO);
    }

    @ApiOperation("退出登录")
    @GetMapping("logout")
    public void logout(@ApiIgnore HttpSession session){
        session.removeAttribute("user");
    }
}
